Testing Mode And Transmission Blocking; Checking The System (Scada) Interface - Siemens siprotec 7SA6 User Manual

8.3.1

Testing mode and transmission blocking

8.3.2

Checking the System (SCADA) Interface

Preliminary
Remarks
Structure of the
Dialogue Box
7SA6 Manual
C53000-G1176-C133-1
If the device is connected to a substation control system or a server, the user is able
to modify, in some protocols, information that is transmitted to the substation (see
Section A.5 "Protocol Dependent Functions" in Appendix A).
In the WHVWLQJ PRGH all messages sent from a SIPROTEC
substation are marked with an extra test bit so that the substation is able to identify
them as messages announcing no real faults. Furthermore the WUDQVPLVVLRQ
EORFNLQJ function leads to a total blocking of the message transmission process via
the system interface in the testing mode.
Refer to Subsection 7.2.3 to know how the testing mode and the transmission blocking
can be enabled and disabled. Please note that it is necessary to be 2QOLQH during
the configuration of the device with DIGSI
Provided that the device is equipped with a system (SCADA) interface that is used for
the communication with a substation, it is possible to test via the DIGSI
function if messages are transmitted correctly. Do not apply this test function in the
real operating mode of the device.
DANGER!
The transmission and reception of messages via the system (SCADA) interface
by means of the testing mode is the real exchange of information between the
®
SIPROTEC 4 device and the substation. Connected equipment such as circuit
breakers or disconnectors can be operated as a result of these actions!
Note:
After termination of this test, the device will reboot. All annunciation buffers are
erased. If required, these buffers should be extracted with DIGSI
The system interface test is carried out 2QOLQH using DIGSI
q
Double-click on the 2QOLQH directory to open the required dialogue box.
q
Click on 7HVW and the functional options appear on the right side of the window.
q
Double-click on 7HVWLQJ 0HVVDJHV IRU 6\VWHP ,QWHUIDFH shown in the list
view. The dialogue box 7HVWLQJ 6\VWHP ,QWHUIDFH opens (refer to 8-21).
In the column ,QGLFDWLRQ, all message texts that were configured for the system
interface in the matrix will then appear. In the column 6WDWXV 6FKHGXOHG the user
has to define the value for the messages to be tested. Depending on the type of
message different entering fields are available (e.g. message 21 / message 2))). By
double-clicking onto one of the fields the required value can be selected from the list.
Installation and Commissioning
®
4–device to the
®
4 to be able to use the testing mode.
®
®
4:
®
4 operational
4 prior to the test.
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